Salting icy roads and walkways lowers the freezing point of the water.Keeping salt in blizzard emergency supply kit is necessary if someone needs to travel to an area having snow. Salt leads to melting and prevents falling snow or rain from being able to freeze. 10-percent salt solution freezes at 20 F (-6 C), and a 20-percent solution freezes at 2 F (-16 C). On a roadway, this means that if you sprinkle salt on the ice, you can melt it.
